一种用于有限空间下的管道预制和推进的装置
By using an arc-shaped track and a directional pulley system, the problem of pipeline prefabrication and advancement under conditions where the foundation pit does not have slope protection was solved, enabling effective pipeline construction in a limited space and providing a simple and economical construction solution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY SEVENTH BUREAU GRP NANJING ENG CO LTD
- Filing Date
- 2025-09-23
- Publication Date
- 2026-07-17
AI Technical Summary
When the foundation pit does not have the conditions for slope protection, the construction of pipeline welding and connection is limited, making it difficult to achieve pipeline prefabrication and advancement within a limited space.
An arc-shaped track and directional pulley device are used. The combination of support pulleys and directional pulleys enables the pipeline to roll and rotate on the arc-shaped track. The support pulleys are used for radial rolling, the directional pulleys are used for axial propulsion, and the support frame is used for stable installation.
It enables pipelines to be prefabricated and welded on the ground and dragged and advanced within the foundation pit. The structure is simple, the cost is low, and it is suitable for construction needs in confined spaces.
Smart Images
Figure CN224516127U_ABST
Abstract
Claims
1. A device for pipe pre-fabrication and pushing in confined spaces, characterized by, include: Support frame (1), Arc-shaped track (2), the number of arc-shaped tracks (2) is multiple, the multiple arc-shaped tracks (2) are arranged in parallel and detachably connected to the support frame (1), and their inner arc surface can support the pipe (5); A directional pulley (4) is provided, and the number of directional pulleys (4) is multiple and detachably connected to the middle of the arc-shaped track (2); the directional pulley (4) can roll against the outer wall of the pipe (5) and its rolling direction is parallel to the axial direction of the pipe (5); A support pulley (3) is detachably connected to the end of the arc-shaped track (2); the support pulley (3) can roll against the outer wall of the pipe (5) and its rolling direction is parallel to the radial direction of the pipe (5).
2. A device for pipe pre-fabrication and pushing in confined spaces according to claim 1, characterized in that, The support frame (1) includes a base plate (11), an upright (12) and a diagonal brace (13). The lower end of the upright (12) is vertically fixed to the top surface of the base plate (11), and the upper end abuts against the outer arc surface of the arc track (2). The upper end of the diagonal brace (13) is fixed to the upper end of the upright (12), and the lower end is fixed to the top surface of the base plate (11) to form a triangular support structure.
3. A device for pipe pre-fabrication and pushing in confined spaces according to claim 1, characterized in that, The arc-shaped track (2) is formed by bending channel steel, and the opening of the channel steel corresponds to the inner arc surface of the arc-shaped track (2); multiple stiffening plates are fixed relative to the inner wall of the opening.
4. A device for pipe pre-fabrication and pushing in confined spaces according to claim 3, characterized in that, It also includes a support channel steel (7), which is fixed to the ends of the plurality of arc-shaped rails (2) and its length direction is parallel to the axial direction of the pipe (5); the support pulley (3) is detachably connected to the support channel steel (7).
5. A device for pipe pre-fabrication and pushing in confined spaces according to claim 4, characterized in that, The opening of the support channel steel (7) faces the inner arc surface of the arc track (2); the bottom wall of the support channel steel (7) is provided with a plurality of support bolt holes, and the support pulley (3) can be bolted to the support bolt holes.
6. A device for pipe pre-fabrication and pushing in confined spaces according to claim 1, characterized in that, It also includes a connecting plate (6), which is fixed on the inner arc surface of the plurality of arc-shaped tracks (2) and its length direction is parallel to the axial direction of the pipe (5). The directional pulley (4) is detachably connected to the connecting plate (6).
7. A device for pipe pre-fabrication and pushing in confined spaces according to claim 6, characterized in that, The connecting plate (6) has multiple displacement bolt holes, and the directional pulley (4) can be bolted to the displacement bolt holes.
8. A device for pipe pre-fabrication and advancement in confined spaces according to any one of claims 1 to 7, characterized in that, The arc track (2) has multiple segments, and the multiple segments of the arc track (2) are connected end to end by hinges (8).